12744 J. Am. Chem. Soc., Vol. 123, No. 50, 2001
Additions and Corrections Synthesis of Novel Expanded Calixphyrins: Anion Binding Properties of a Calix[6]phyrin with a Deep Cavity [J. Am. Chem. Soc. 2001, 123, 2099-2100]. CHRISTOPHE BUCHER, REBECCA S. ZIMMERMAN, VINCENT LYNCH, VLADIMIR KRA´L, AND JONATHAN L. SESSLER* In the experimental procedure associated with preparing compounds 2 and 3 we have found that the reaction can become violently exothermic if dry acetone and pyrrole are used and the addition of TFA is not carried out extremely slowly. While in our hands no problems have been encountered, when technical grade actone, presumably containing traces of water, was used, it is nonetheless recommended that an efficient reflux condenser be attached to the reaction vessel and good stirring be maintained throughout the addition, and that the flask be surrounded by a large, room temperature water bath to help with heat dissipation. Other appropriate precautions, such as the use of an explosion shield if working on large scale, are also recommended. JA0151347 10.1021/ja0151347 Published on Web 11/21/2001
Chemistry-Structure-Simulation or Chemistry-SimulationStructure Sequences? The Case of MIL-34, a New Porous Aluminophosphate [J. Am. Chem. Soc. 2001, 123, 96429651]. THIERRY LOISEAU, CAROLINE MELLOT-DRAZNIEKS, CAPUCINE SASSOYE, STE´PHANIE GIRARD, NATHALIE GUILLOU, CLARISSE HUGUENARD, FRANCIS TAULELLE, AND GE´RARD FE´REY* Tables 3 and 4 concerning the atomic coordinates of the assynthesized aluminophosphate MIL-34 and its calcined form have been erroneously reported. A minus sign has been added to the values of the atomic coordinated. The correct data are available from the Fachinformationzentrum Karlsruhe, 76344 Eggenstein-Leopoldshafen, Germany (fax (+49) 7247-808-666; e-mail
[email protected]), depository number CSD412210. The authors thank Dr. Stephen Wilson from UOP R&D (Des Plaines, IL) for pointing out these typographical errors. JA015135Z 10.1021/ja015135z Published on Web 11/20/2001
